So my girlfriend and I were making out and she touched my penis....I didn't touch hers though....at this one time a really really small drop of precum felt on the denim she was wearing, like near the vaginal area but she was wearing both her underwear and the denim above that.....is it possible that the sperm goes through both clothing and enters her vagina? Pls help me i m scared....I m 18 next month and she's still 16.